I find that the differences between DOS2 and BG3 (from what we've seen) far outweigh the similarities to the point that outside of a TB combat, a few placeholder assets and running on the same engine there is nothing similar between them.
Although incorporating FR/BG lore and continuing its story is enough to entitle Larian to use BG3 title, the similarities between BG3/DOS 2 are very obvious.
TB combat, 4 characters only, huge terrain exploration format, absence of day/night cycle, uninspiring art style with repetitive medieval ruins and generic statues and more recently speaking to the dead/animals. They are implementing everything from DOS.
The differences of verticality, cinematics and wider decision tree is something you would naturally expect from DOS 3 with higher budget.
It seems to me that Larian only knows how to make one type of a game.
